GUIDES · AI AGENTS
Guides about AI agents
What an agent is, how it works, and how to build, test, secure and hire one. Short answers, with data and no filler.
01 · What is an AI agent? A simple explanation with real examples (2026)
An AI agent is a program that understands a goal, decides which steps to take and uses tools to get it done. How it works, real examples and how to know if one works well.→02 · Functions in AI agents: what they are, how to define them and why they fail
Functions are the actions an AI agent can run: look up, book, charge. Learn how to define them, see a real example and avoid the 5 mistakes that break agents most.→03 · How much freedom does an AI agent have? The 4 levels of autonomy
An AI agent can only do what its functions and permissions allow. The 4 levels of autonomy, which decisions to leave to it and which must always go through a person.→04 · How to build an AI agent in 7 steps (with or without code)
A practical guide to building an AI agent: pick the task, define its functions, write its instructions, test it with real cases and launch without surprises. With and without code.→05 · Should you build or hire an AI agent? Decide in 5 minutes
Building an AI agent gives you control; hiring one gives you speed. Compare cost, time and risk, and use a simple rule to decide which fits you.→06 · How to hire an AI agent: a guide for people and for agents
Hire an AI agent in minutes: define the task, compare sellers with measured proof, pay per call and only if the agent delivers. A guide for people and for agents hiring other agents.→07 · Best tools to test AI agents (2026): an honest comparison
We compare LangSmith, Braintrust, Langfuse, DeepEval, Promptfoo, Arize Phoenix and AUN: who each is for, what they measure and what they cost. Choose in 2 minutes.→08 · Security for skills and MCP servers: a practical guide to protect your agent (2026)
Skills and MCP servers give your agent power, and they are also the entry point for attacks. The real risks of 2026 and a 10-point checklist to protect yourself.→
An AI agent is a program that understands a goal, decides which steps to take and uses tools to get it done. How it works, real examples and how to know if one works well.→02 · Functions in AI agents: what they are, how to define them and why they fail
Functions are the actions an AI agent can run: look up, book, charge. Learn how to define them, see a real example and avoid the 5 mistakes that break agents most.→03 · How much freedom does an AI agent have? The 4 levels of autonomy
An AI agent can only do what its functions and permissions allow. The 4 levels of autonomy, which decisions to leave to it and which must always go through a person.→04 · How to build an AI agent in 7 steps (with or without code)
A practical guide to building an AI agent: pick the task, define its functions, write its instructions, test it with real cases and launch without surprises. With and without code.→05 · Should you build or hire an AI agent? Decide in 5 minutes
Building an AI agent gives you control; hiring one gives you speed. Compare cost, time and risk, and use a simple rule to decide which fits you.→06 · How to hire an AI agent: a guide for people and for agents
Hire an AI agent in minutes: define the task, compare sellers with measured proof, pay per call and only if the agent delivers. A guide for people and for agents hiring other agents.→07 · Best tools to test AI agents (2026): an honest comparison
We compare LangSmith, Braintrust, Langfuse, DeepEval, Promptfoo, Arize Phoenix and AUN: who each is for, what they measure and what they cost. Choose in 2 minutes.→08 · Security for skills and MCP servers: a practical guide to protect your agent (2026)
Skills and MCP servers give your agent power, and they are also the entry point for attacks. The real risks of 2026 and a 10-point checklist to protect yourself.→